Elevating device and rotary drilling rig
A technology for rotary drilling rigs and drilling tools, which is applied to drill pipes, drill pipes, drilling equipment, etc., can solve the problems of complex structure of the intermediate body, difficult to realize the production and assembly process, and large overall size of the lifter. Bearing, good bidirectional axial load, reducing the effect of complexity
Pending Publication Date: 2021-01-22
BEIJING SANY INTELLIGENT MFG TECH CO LTD
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Problems solved by technology
[0003] The number of bearings used in the existing lifter is relatively large, and the structure of the intermediate body is relatively complicated, resulting in a large overall size of the lifter, and the production and assembly process is not easy to realize
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[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only It is a part of the embodiments of this application, not all of them. The components of the embodiments of the present application generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations. Thus, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the application as claimed, but is merely representative of selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in ...
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The invention provides an elevating device and a rotary drilling rig, and relates to the technical field of engineering machinery. A structure of the elevating device is optimized to a certain extent,and the overall size of the elevating device is shortened. The elevating device is used for the rotary drilling rig and comprises a first joint, a barrel, a second joint and a bidirectional thrust ball bearing; one end of the first joint is inserted into the barrel from one end of the barrel, and a mounting cavity is formed in the end, inserted into the barrel, of the first joint; the second joint comprises a mounting seat and a rotating shaft, and the rotating shaft is inserted into the barrel from the end, away from the first joint, of the barrel, and the end, away from the mounting cavity,extending into the mounting seat; and the bidirectional thrust ball bearing sleeves the rotating shaft and is located in the barrel, and the first joint abuts against one end of the bidirectional thrust ball bearing, so that the bidirectional thrust ball bearing is compressed. A first abutting face and a second abutting face which abut against the two sides of the bidirectional thrust ball bearing correspondingly are formed on the rotating shaft, so that the bidirectional thrust ball bearing bears biaxial loads.
Description
technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a hoisting device and a rotary drilling rig. Background technique [0002] The lifter is an important structure used in the operation of the rotary drilling rig. It is a key component mainly used to lift and hang drill pipes and drilling tools. The retraction and release of the wire rope drives the lifting and lowering of the rotary drilling drill pipe and the drill bit, and bears the torsional force of the drill pipe when the power head rotates and the drill bit throws soil. Through its own rotation, the steel wire rope is removed due to the rotation of the drill pipe The generated torsional force is transmitted to prevent the steel wire rope from being kinked, coiled, broken, etc. due to torsion. [0003] The number of bearings used in the existing lifter is relatively large, and the structure of the connecting body is relatively complicated, which leads to a lar...
Claims
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Login to View More IPC IPC(8): E21B19/00E21B19/02E21B41/00
CPCE21B19/008E21B19/02E21B41/00
Inventor 康乐张世平王浩
Owner BEIJING SANY INTELLIGENT MFG TECH CO LTD